If Statement Begin Property

If there is an "if" statement at the current line and tab, then the expression is updated to the "if" statement test

if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = if test:
  • expression state at time t = "not_expr"

then the expression at time (t + 1) = test

When Python sees an "if" statement, Python first evaluates the test condition.

"not_expr" indicates that Python is not currently evaluating an expression.

For Example,

if the following are true:

  • the line at time 0 = 1
  • the tab at time 0 = 0
  • statement at line 1, tab 0 = if __eq__(3, 3):
  • expression state at time 0 = "not_expr"

then the expression at time (0 + 1) = __eq__(3, 3)

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